DOKK / manpages / debian 12 / libc-ares-dev / ares_free_data.3.en
ARES_FREE_DATA(3) Library Functions Manual ARES_FREE_DATA(3)

ares_free_data - Free data allocated by several c-ares functions

#include <ares.h>
void ares_free_data(void *dataptr)
cc file.c -lcares

The ares_free_data(3) function frees one or more data structures allocated and returned by several c-ares functions. Specifically the data returned by the following list of functions must be deallocated using this function.

ares_get_servers(3)">">ares_get_servers(3)
When used to free the data returned by ares_get_servers(3) this will free the whole linked list of ares_addr_node structures returned by ares_get_servers(3).
ares_parse_srv_reply(3)">">ares_parse_srv_reply(3)
When used to free the data returned by ares_parse_srv_reply(3) this will free the whole linked list of ares_srv_reply structures returned by ares_parse_srv_reply(3), along with any additional storage associated with those structures.
ares_parse_mx_reply(3)">">ares_parse_mx_reply(3)
When used to free the data returned by ares_parse_mx_reply(3) this will free the whole linked list of ares_mx_reply structures returned by ares_parse_mx_reply(3), along with any additional storage associated with those structures.
ares_parse_txt_reply(3)">">ares_parse_txt_reply(3)
When used to free the data returned by ares_parse_txt_reply(3) this will free the whole linked list of ares_txt_reply structures returned by ares_parse_txt_reply(3), along with any additional storage associated with those structures.
ares_parse_soa_reply(3)">">ares_parse_soa_reply(3)
When used to free the data returned by ares_parse_soa_reply(3) this will free the ares_soa_reply structure, along with any additional storage associated with those structure. ares_parse_uri_reply(3) When used to free the data returned by ares_parse_uri_reply(3) this will free list of ares_uri_reply structures, along with any additional storage associated with those structure.

The ares_free_data() function does not return a value.

This function was first introduced in c-ares version 1.7.0.

ares_get_servers(3), ares_parse_srv_reply(3), ares_parse_mx_reply(3), ares_parse_txt_reply(3), ares_parse_soa_reply(3)

Yang Tse

Copyright 1998 by the Massachusetts Institute of Technology.
Copyright (C) 2004-2010 by Daniel Stenberg.

5 March 2010